The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 21, 2010
Filed:
Mar. 23, 2007
Applicant:
Masahiro Nagae, Susono, JP;
Inventor:
Masahiro Nagae, Susono, JP;
Assignee:
Toyota Jidosha Kabushiki Kaisha, Aichi-Ken, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02B 47/08 (2006.01); F02M 25/07 (2006.01);
U.S. Cl.
CPC ...
Abstract
The ratio between the amount of exhaust gas recirculated by a high-pressure EGR device and the amount of exhaust gas recirculated by a low-pressure EGR device (mixture ratio) is controlled based on the operating state of an internal combustion engine and the correlation between the fuel consumption rate of the internal combustion engine and the mixture ratio. Thus, high-pressure EGR and low-pressure EGR are performed at the mixture ratio (optimum mixture ratio) at which the fuel consumption rate is at or around the minimum value.